Next on empty iterator : ERROR on GET Rest Service Call

0
hi everyone,  I get this Next on empty iterator error on calling a rest Service of Method GET.  This error isn’t consistent. I usually get this error on first service call. Can i know the reason for this and how do i resolve this issue ? below is the details of the error  Error Type - java.util.NoSuchElementException Message - next on empty iterator Stack Trace - Error parsing JSON. next on empty iterator at com.mendix.integration.importer.json.JsonImporter.$anonfun$parseJson$2(JsonImporter.scala:60) at com.mendix.integration.util.AutoCloseableUtil$.using(AutoCloseableUtil.scala:10) at com.mendix.integration.importer.json.JsonImporter.$anonfun$parseJson$1(JsonImporter.scala:49) at com.mendix.integration.util.AutoCloseableUtil$.using(AutoCloseableUtil.scala:10) at com.mendix.integration.importer.json.JsonImporter.parseJson(JsonImporter.scala:48) at com.mendix.integration.importer.json.JsonImporter.parse$1(JsonImporter.scala:37) at com.mendix.integration.importer.json.JsonImporter.$anonfun$importStream$1(JsonImporter.scala:39) at com.mendix.integration.util.ContextUtil$RichContext$.withTransaction$extension(ContextUtil.scala:11) at com.mendix.integration.importer.json.JsonImporter.importStream(JsonImporter.scala:39) at com.mendix.integration.internal.InternalIntegration.doImportStream(InternalIntegration.scala:127) at com.mendix.integration.internal.InternalIntegration.doImportStream$(InternalIntegration.scala:110) at com.mendix.integration.internal.InternalIntegrationImpl.doImportStream(InternalIntegrationImpl.scala:41) at com.mendix.integration.actions.ImportMappingResult$.apply(ImportMappingResult.scala:61) at com.mendix.integration.actions.ServiceCallResult.importResponse(ServiceCallResult.scala:59) at com.mendix.integration.actions.ServiceCallResult.toMendixResult(ServiceCallResult.scala:32) at com.mendix.integration.actions.microflow.RestCallAction.handleResponse(RestCallAction.scala:75) at com.mendix.integration.actions.microflow.RestCallAction.$anonfun$execute$2(RestCallAction.scala:53) at com.mendix.integration.util.AutoCloseableUtil$.using(AutoCloseableUtil.scala:10) at com.mendix.integration.actions.microflow.RestCallAction.execute(RestCallAction.scala:52) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:47) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:201) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:157) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:46) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:79) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:57) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:55) at com.mendix.basis.actionmanagement.ActionManagerBase$1.execute(ActionManagerBase.java:150) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.basis.actionmanagement.ActionManagerBase.executeSync(ActionManagerBase.java:155) at com.mendix.basis.component.InternalCoreBase.executeSync(InternalCoreBase.java:493) at com.mendix.modules.microflowengine.actions.SubMicroflowAction.execute(SubMicroflowAction.scala:51) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:47) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:201) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:157) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:46) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:79) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:57) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:55) at com.mendix.basis.actionmanagement.ActionManagerBase$1.execute(ActionManagerBase.java:150) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.basis.actionmanagement.ActionManagerBase.executeSync(ActionManagerBase.java:155) at com.mendix.basis.component.InternalCoreBase.execute(InternalCoreBase.java:383) at com.mendix.basis.component.InternalCoreBase.execute(InternalCoreBase.java:398) at com.mendix.webui.actions.client.ExecuteMicroflowAction.runMicroflow(ExecuteMicroflowAction.scala:46) at com.mendix.webui.actions.client.ExecuteMicroflowAction.apply(ExecuteMicroflowAction.scala:32) at com.mendix.webui.actions.client.ExecuteMicroflowAction.apply(ExecuteMicroflowAction.scala:15) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$4(RegularClientAction.scala:46) at com.mendix.webui.requesthandling.helpers.StateHandling.withState(StateHandling.scala:33) at com.mendix.webui.requesthandling.helpers.StateHandling.withState$(StateHandling.scala:21) at com.mendix.webui.actions.client.RegularClientAction.withState(RegularClientAction.scala:21) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$3(RegularClientAction.scala:44) at scala.util.Try$.apply(Try.scala:213) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2(RegularClientAction.scala:44) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2$adapted(RegularClientAction.scala:42) at com.mendix.webui.requesthandling.helpers.ContextHandling.$anonfun$inContext$4(ContextHandling.scala:41) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23) at com.mendix.basis.actionmanagement.IMonitoredAction$$anon$1.execute(IMonitoredAction.scala:47) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.basis.actionmanagement.IMonitoredAction.monitor(IMonitoredAction.scala:49) at com.mendix.basis.actionmanagement.IMonitoredAction.monitor$(IMonitoredAction.scala:25) at com.mendix.webui.requesthandling.helpers.ContextHandling$ClientMonitoredAction.monitor(ContextHandling.scala:49) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:41) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:27) at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:21) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:24) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:19) at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:21) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$1(RegularClientAction.scala:42) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23) at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest(ProfileHandling.scala:14) at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest$(ProfileHandling.scala:10) at com.mendix.webui.actions.client.RegularClientAction.profileRequest(RegularClientAction.scala:21) at com.mendix.webui.actions.client.RegularClientAction.execute(RegularClientAction.scala:39) at com.mendix.webui.requesthandling.ClientRequestHandler.handleAction(ClientRequestHandler.scala:124) at com.mendix.webui.requesthandling.ClientRequestHandler.processRequest(ClientRequestHandler.scala:101) at com.mendix.externalinterface.connector.RequestHandler.doProcessRequest(RequestHandler.java:40) at com.mendix.external.connector.MxRuntimeConnector$1.execute(MxRuntimeConnector.java:72) at com.mendix.external.connector.MxRuntimeConnector$1.execute(MxRuntimeConnector.java:69) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.external.connector.MxRuntimeConnector.processRequest(MxRuntimeConnector.java:75) at com.mendix.basis.impl.MxRuntimeImpl.processRequest(MxRuntimeImpl.java:909) at com.mendix.m2ee.appcontainer.server.handler.RuntimeHandler.service(RuntimeHandler.java:42) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:867) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:542) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1588) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1557) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) at org.eclipse.jetty.server.Server.handle(Server.java:502) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103) at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765) at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683) at java.lang.Thread.run(Thread.java:748) Caused by: next on empty iterator at scala.collection.Iterator$$anon$2.next(Iterator.scala:41) at scala.collection.Iterator$$anon$2.next(Iterator.scala:39) at scala.collection.immutable.StreamIterator.next(Stream.scala:1057) at com.mendix.integration.importer.json.JsonParser.next(JsonParser.scala:24) at com.mendix.integration.importer.json.JsonParser.next(JsonParser.scala:7) at com.mendix.integration.importer.json.JsonStreamingHandler.$anonfun$parse$1(JsonStreamingHandler.scala:37) at com.mendix.integration.util.AutoCloseableUtil$.using(AutoCloseableUtil.scala:10) at com.mendix.integration.importer.json.JsonStreamingHandler.parse(JsonStreamingHandler.scala:35) at com.mendix.integration.importer.json.JsonImporter.$anonfun$parseJson$3(JsonImporter.scala:50) at scala.util.Try$.apply(Try.scala:213) at com.mendix.integration.importer.json.JsonImporter.$anonfun$parseJson$2(JsonImporter.scala:50) at com.mendix.integration.util.AutoCloseableUtil$.using(AutoCloseableUtil.scala:10) at com.mendix.integration.importer.json.JsonImporter.$anonfun$parseJson$1(JsonImporter.scala:49) at com.mendix.integration.util.AutoCloseableUtil$.using(AutoCloseableUtil.scala:10) at com.mendix.integration.importer.json.JsonImporter.parseJson(JsonImporter.scala:48) at com.mendix.integration.importer.json.JsonImporter.parse$1(JsonImporter.scala:37) at com.mendix.integration.importer.json.JsonImporter.$anonfun$importStream$1(JsonImporter.scala:39) at com.mendix.integration.util.ContextUtil$RichContext$.withTransaction$extension(ContextUtil.scala:11) at com.mendix.integration.importer.json.JsonImporter.importStream(JsonImporter.scala:39) at com.mendix.integration.internal.InternalIntegration.doImportStream(InternalIntegration.scala:127) at com.mendix.integration.internal.InternalIntegration.doImportStream$(InternalIntegration.scala:110) at com.mendix.integration.internal.InternalIntegrationImpl.doImportStream(InternalIntegrationImpl.scala:41) at com.mendix.integration.actions.ImportMappingResult$.apply(ImportMappingResult.scala:61) at com.mendix.integration.actions.ServiceCallResult.importResponse(ServiceCallResult.scala:59) at com.mendix.integration.actions.ServiceCallResult.toMendixResult(ServiceCallResult.scala:32) at com.mendix.integration.actions.microflow.RestCallAction.handleResponse(RestCallAction.scala:75) at com.mendix.integration.actions.microflow.RestCallAction.$anonfun$execute$2(RestCallAction.scala:53) at com.mendix.integration.util.AutoCloseableUtil$.using(AutoCloseableUtil.scala:10) at com.mendix.integration.actions.microflow.RestCallAction.execute(RestCallAction.scala:52) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:47) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:201) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:157) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:46) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:79) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:57) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:55) at com.mendix.basis.actionmanagement.ActionManagerBase$1.execute(ActionManagerBase.java:150) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.basis.actionmanagement.ActionManagerBase.executeSync(ActionManagerBase.java:155) at com.mendix.basis.component.InternalCoreBase.executeSync(InternalCoreBase.java:493) at com.mendix.modules.microflowengine.actions.SubMicroflowAction.execute(SubMicroflowAction.scala:51) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:47) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:201) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:157) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:46) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:79) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:57) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:55) at com.mendix.basis.actionmanagement.ActionManagerBase$1.execute(ActionManagerBase.java:150) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.basis.actionmanagement.ActionManagerBase.executeSync(ActionManagerBase.java:155) at com.mendix.basis.component.InternalCoreBase.execute(InternalCoreBase.java:383) at com.mendix.basis.component.InternalCoreBase.execute(InternalCoreBase.java:398) at com.mendix.webui.actions.client.ExecuteMicroflowAction.runMicroflow(ExecuteMicroflowAction.scala:46) at com.mendix.webui.actions.client.ExecuteMicroflowAction.apply(ExecuteMicroflowAction.scala:32) at com.mendix.webui.actions.client.ExecuteMicroflowAction.apply(ExecuteMicroflowAction.scala:15) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$4(RegularClientAction.scala:46) at com.mendix.webui.requesthandling.helpers.StateHandling.withState(StateHandling.scala:33) at com.mendix.webui.requesthandling.helpers.StateHandling.withState$(StateHandling.scala:21) at com.mendix.webui.actions.client.RegularClientAction.withState(RegularClientAction.scala:21) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$3(RegularClientAction.scala:44) at scala.util.Try$.apply(Try.scala:213) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2(RegularClientAction.scala:44) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2$adapted(RegularClientAction.scala:42) at com.mendix.webui.requesthandling.helpers.ContextHandling.$anonfun$inContext$4(ContextHandling.scala:41) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23) at com.mendix.basis.actionmanagement.IMonitoredAction$$anon$1.execute(IMonitoredAction.scala:47) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.basis.actionmanagement.IMonitoredAction.monitor(IMonitoredAction.scala:49) at com.mendix.basis.actionmanagement.IMonitoredAction.monitor$(IMonitoredAction.scala:25) at com.mendix.webui.requesthandling.helpers.ContextHandling$ClientMonitoredAction.monitor(ContextHandling.scala:49) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:41) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:27) at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:21) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:24) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:19) at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:21) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$1(RegularClientAction.scala:42) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23) at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest(ProfileHandling.scala:14) at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest$(ProfileHandling.scala:10) at com.mendix.webui.actions.client.RegularClientAction.profileRequest(RegularClientAction.scala:21) at com.mendix.webui.actions.client.RegularClientAction.execute(RegularClientAction.scala:39) at com.mendix.webui.requesthandling.ClientRequestHandler.handleAction(ClientRequestHandler.scala:124) at com.mendix.webui.requesthandling.ClientRequestHandler.processRequest(ClientRequestHandler.scala:101) at com.mendix.externalinterface.connector.RequestHandler.doProcessRequest(RequestHandler.java:40) at com.mendix.external.connector.MxRuntimeConnector$1.execute(MxRuntimeConnector.java:72) at com.mendix.external.connector.MxRuntimeConnector$1.execute(MxRuntimeConnector.java:69) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.external.connector.MxRuntimeConnector.processRequest(MxRuntimeConnector.java:75) at com.mendix.basis.impl.MxRuntimeImpl.processRequest(MxRuntimeImpl.java:909) at com.mendix.m2ee.appcontainer.server.handler.RuntimeHandler.service(RuntimeHandler.java:42) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:867) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:542) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1588) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1557) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) at org.eclipse.jetty.server.Server.handle(Server.java:502) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103) at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765) at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683) at java.lang.Thread.run(Thread.java:748)
asked
2 answers
1

Hi Rachana,

this is a very unclear request. Please attach the error and stacktrace when this occurs.

answered
0

Double check your mapping of the JSON. What the error is telling you that it expected a field name but none was there. In your mapping you define which attributes are nillable. Did you mark the right ones?

Regards,

Ronald

 

answered